We had a comfortable one month stay at Neil's and Yui's ground floor condo at Metro Park Sathorn. Very thoughtful hosts with snacks & beverages, extra bed sheets and towels, and ample toiletries provided. The kitchen was well stocked with plates, pots, pans, utensils, and small appliances. There was also a garden patio area facing a small farm which was a nice place to relax.
We felt safe and secure staying there because of 24 hr. security and very friendly & helpful guards. There was a 7-11 and a well equipped Fitness Center (150 baht per visit or cheaper weekly rate) a short walk away. Also, a MaxValu grocery store and McDonald's at the nearby shopping center with a convenient golf cart shuttle for trips back and forth.
The condo also had a very fast (30+ Mbps), stable, and reliable AIS Fibre internet connection.
The location was not central but it was peaceful and quiet (rare for Bangkok). You need to take the Metro Park Shuttle Van (20 baht) or taxi (50 baht) to the Wutthakat BTS on the Silom Line to get into central Bangkok. It was nice coming back to the condo from the hustle and bustle of Bangkok.
Overall, we recommend staying at Neil's and Yui's condo.